Ros noetic error

I’m currently working with ros noetic, I got a package which is supposed to work with my Braccio Arduino.
When I launch the launch file (arm_launch.launch) I got this error :

pi@raspberrypi:~/catkin_ws $ roslaunch launch/arm_launch.launch
logging to /home/pi/.ros/log/d94a9972-1009-11ec-a551-c5d9d944afff/roslaunch-raspberrypi-1202.log
Checking log directory for disk usage. This may take a while.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

Traceback (most recent call last):
  File "/opt/ros/noetic/lib/python3/dist-packages/roslaunch/", line 347, in main
  File "/opt/ros/noetic/lib/python3/dist-packages/roslaunch/", line 305, in start
  File "/opt/ros/noetic/lib/python3/dist-packages/roslaunch/", line 254, in _start_infrastructure
  File "/opt/ros/noetic/lib/python3/dist-packages/roslaunch/", line 157, in _load_config
    roslaunch_strs=self.roslaunch_strs, verbose=self.verbose)
  File "/opt/ros/noetic/lib/python3/dist-packages/roslaunch/", line 461, in load_config_default
    loader.load(f, config, argv=args, verbose=verbose)
  File "/opt/ros/noetic/lib/python3/dist-packages/roslaunch/", line 761, in load
    self._load_launch(launch, ros_config, is_core=core, filename=filename, argv=argv, verbose=verbose)
  File "/opt/ros/noetic/lib/python3/dist-packages/roslaunch/", line 733, in _load_launch
    self._recurse_load(ros_config, launch.childNodes, self.root_context, None, is_core, verbose)
  File "/opt/ros/noetic/lib/python3/dist-packages/roslaunch/", line 699, in _recurse_load
    val = self._include_tag(tag, context, ros_config, default_machine, is_core, verbose)
  File "/opt/ros/noetic/lib/python3/dist-packages/roslaunch/", line 96, in call
    return f(*args, **kwds)
  File "/opt/ros/noetic/lib/python3/dist-packages/roslaunch/", line 596, in _include_tag
    inc_filename = self.resolve_args(tag.attributes['file'].value, context)
  File "/usr/lib/python3.7/xml/dom/", line 552, in __getitem__
    return self._attrs[attname_or_tuple]
KeyError: 'file'

If you could help me it would be amazing, If you need any other information let me know